Is there any ballpark amount that estimates if you are well nourished the night prior (you eat a proper dinner), what your glycogen stores are first thing in the morning?
For those of us that train first thing right out of bed with no ability to eat prior, and can only retain carbs while on the bike, just wondering what the on-board stores could be to properly estimate what needs to be consumed to avoid “running out” and the fun that comes when that occurs - mental fog, hollow legs, increased RPE, etc.